Casehardened: a casehardened fastener is a fastener of ferrous material having a surface which has been made harder than the core.
表面硬化:表面硬化的紧固件是黑色金属,其表面经过处理后比内心硬度要高。
2
By means of extensive tests on nitrided and casehardened gears, it was attempted to discover the possibilities and the limits of nitriding for gears.
通过对氮化和表面渗碳硬化齿轮大量的试验研究,设法揭示对齿轮进行氮化处理的可能性和局限性。
3
Generously dimensioned ball or roller bearings, casehardened forged and ground gears, and internally and externally reinforced gearboxes ensure a long, low maintenance service life.